JP4515434B2 - Unit information setting device, unit information setting program, and recording medium recording the same - Google Patents

Description

  The present invention relates to a unit information setting device, a unit information setting program, and a recording medium on which a unit information setting program that facilitates setting of an interface unit of a programmable display having an interface unit.

  The programmable display has an interface with the host controller (PLC, inverter, temperature controller, etc.), and displays the operating status of the devices connected to the host controller and gives control instructions to the devices. This is an operation-type display with a function to accept input from the screen. In general, since the programmable display has a graphic display function, it can display an operation panel, a switch, an indicator lamp, and the like, and serves as an operation terminal in the control system.

  In recent years, as disclosed in Patent Document 1, such a programmable display device includes an input / output unit and an I / O control interface, and further includes an execution environment for executing a sequence program. Models with equivalent control functions are emerging. In addition, in such models, there have been some products that omit the function of communicating with an external PLC and have a function that can attach various interface units to the outside (for example, Patent Document 1).

  In such a programmable display, it is necessary to have information on the interface unit to be connected in order to perform appropriate data communication according to the interface unit. For this reason, conventionally, information related to the interface unit has been set using editor software for creating a screen to be displayed on the programmable display 2 and a sequence program to be executed on the programmable display, and has been downloaded to the programmable display. .

Moreover, although it is not a programmable display about the setting of an interface unit, it is disclosed by patent document 2 regarding the programmable logic controller (PLC). In Patent Document 2, the CPU unit reads the configuration of the input / output unit from the system configuration set by the peripheral device (programming means), and the arrangement of each unit developed in the memory is changed to the changed I / O allocation data. It is described that the order is changed to be correct.
Japanese Patent Laid-Open No. 10-78806 (published March 24, 1998) Japanese Patent Laid-Open No. 10-340108 (released on December 22, 1998)

  However, in the unit information setting method in the conventional programmable display, a dialog box for setting is prepared for each interface unit, and it takes time to open and close the corresponding dialog box each time the setting is changed. Further, in the conventional unit information setting method, each setting item is displayed only by characters on the dialog box, so the hardware configuration is not known at all. The same applies to the setting method disclosed in Patent Document 1.

  The present invention has been made in view of the above-described problems, and an object thereof is to facilitate setting / changing of information related to an interface unit connected to a programmable display.

  In order to solve the above-described problem, the unit information setting device according to the present invention provides information related to the interface unit that is mounted on a programmable display capable of continuously mounting a plurality of interface units to the programmable display. A unit information setting device for setting, and a mounting image display means for displaying an image of a state in which the set interface unit is mounted on the programmable display on a setting screen for setting information on the interface unit; And an information display means for displaying information on the interface unit corresponding to the unit portion on the setting screen when the unit portion in the mounted image is selected.

  In the above configuration, an image of the state in which the set interface unit is mounted on the programmable display is displayed on the setting screen by the mounting image display means. As a result, the user can easily visually confirm the hardware configuration and the setting contents. When the unit portion in the wearing image is selected by the user, information related to the interface unit corresponding to the unit portion is displayed on the setting screen by the information display means. Thereby, it is possible to set and confirm information related to the interface unit mounted on one setting screen.

  The unit information setting device displays an operation button for switching the mounting position of the interface unit on the programmable display on the setting screen, and when the operation button is operated, the mounting position of the designated interface unit is displayed. It is preferable that the information includes a position information changing unit that changes the information according to the replacement of the mounting position, and the mounting image display unit displays the unit part by switching the arrangement based on the changed mounting position information. .

In this configuration, the operation button is displayed by the position information changing unit, and when the user operates the operation button, the position information changing unit changes the information on the mounting position of the designated interface unit according to the replacement of the mounting position. The Further, when the information on the mounting position is exchanged, the arrangement of the unit portions is exchanged and displayed on the basis of the information on the changed mounting position by the wearing image display means. Thus, it is possible to perform the replacement of the mounting position of the interface unit by a simple operation, and can also be easily confirmed hardware configuration after replacement of the mounting position.

  The screen creation program of the present invention is a unit information setting program for operating any one of the above-described unit information setting devices, and is a program that causes a computer to function as each of the means. The unit information setting program is recorded on a computer-readable recording medium. Thus, the unit information setting device can be realized by causing a computer to read and execute the program.

  As described above, the unit information setting device according to the present invention is mounted so that an image of a state in which the set interface unit is mounted on the programmable display is displayed on a setting screen for setting information on the interface unit. Image display means, and information display means for displaying information on the interface unit corresponding to the unit part on the setting screen when the unit part in the mounted image is selected. Thereby, setting and confirmation of information regarding the interface unit mounted on one setting screen can be performed while visually confirming the hardware configuration. Therefore, there is an effect that the setting and confirmation regarding the interface unit can be easily performed.

  An embodiment of the present invention will be described with reference to FIGS. 1 to 5 as follows.

  As shown in FIG. 1, an editor computer 1 according to the present embodiment is connected to a programmable display 2 via a transfer cable 3. The editor computer 1 is an editor device that creates a screen displayed on the programmable display 2 and a logic program executed by the programmable display 2. The screen and logic program created by the editor computer 1 are transferred to the programmable display 2 via the transfer cable 3.

  First, the programmable display 2 will be described here.

  The programmable display 2 is provided with an arithmetic processing unit such as a CPU, and is a dedicated computer that realizes an operation function and a display function unique to the programmable display by displaying input operation and display screen data created by the user. is there. Moreover, the programmable display 2 is comprised so that the control function of PLC may be provided by connecting the interface unit 4 outside.

  The programmable display 2 includes an HMI / controller unit 21, a display 22, a touch panel 23, an interface unit (I / F in the figure) 24, and an I / O control interface (I / O / I / F in the figure). ) 25, a data memory 26 and a work memory 27.

  As the display 22, a flat panel display such as a liquid crystal display, an EL display, or a plasma display is preferably used in order to configure the programmable display device 2 to be thin. The touch panel 23 is an input device provided for performing touch input on the display image of the display 22.

  The interface unit 24 is a communication control unit for the programmable display device 2 to communicate with the editor computer 1, and is connected to the transfer cable 3. For example, a USB cable is used as the transfer cable 3.

  The I / O control interface 25 is an interface circuit that mediates transmission / reception of signals between the HMI / controller unit 21 and the interface unit 4 described later, and includes an input / output memory, a D / A converter, and an A / D converter. Etc.

  The interface unit 4 includes a large number of input / output terminals, input / output circuits, and the like so that the device 5 can be connected. The interface unit 4 is detachably attached to the main body of the programmable display device 2 in accordance with the specifications of devices such as the device 5 to be connected. Specifically, for example, the interface unit 4 is attached to the back surface of the programmable display device 2 via the connector 28, and another interface unit 4 is attached to the interface unit 4 in an overlapping manner. For this reason, each interface unit 4 is provided with connectors for connection on both sides. Such a mounting structure of the interface unit 4 may be, for example, the mounting structure of the I / O unit disclosed in Patent Document 1 described above.

  Moreover, the programmable display 2 is provided with the some port in order to communicate with the some interface unit 4 connected separately. And the programmable display 2 specifies the interface unit 4 by the port number for designating each port, and communicates. This port number is transmitted to each interface unit 4 via a port signal line commonly connected to the connector. The port numbers are set as, for example, port 1 and port 2 from the side closer to the programmable display 2.

  As the interface unit 4, a DIO unit for inputting / outputting digital data, an analog / digital conversion unit, a high-speed counter unit, a temperature input unit, or the like is used. The programmable display 2 is preliminarily defined with an interface unit 4 that can be mounted and guarantees the operation. In order to perform data communication via such an interface unit, driver software (I / O driver) is installed in the programmable display 2.

  The data memory 26 is a memory for storing screen files, ladder files, etc., and FEPROM (Flash Erasable and Programmable ROM) is used. Since FEPROM is a rewritable read-only flash memory, it plays the role of a hard disk drive in a general personal computer. A flash memory does not have a movable part and is resistant to impacts, and thus operates stably even in a poor ambient environment.

  The screen file is a data file of a user screen (unit screen configured by screen data for one frame) displayed on the programmable display 2. The screen data includes a base screen to be displayed on the display 22, data of parts, processing definition information to be described later assigned to each part, and the like. This screen data includes a graphic data part and an address data part. The graphic data part includes graphic data about the mark created by the user and data of the part selected by the user, and the address data part is about the inputted mark or part so as to correspond to the graphic data part. Address and a comment corresponding to the address. Specifically, each mark or part in the graphic data portion is associated with a corresponding comment and address in the address data portion.

  Comments include event names such as the operating status (start, stop, etc.) of the device 5, codes corresponding to the device 5 such as SW and lamp corresponding to the switch, LAMP, operation instructions, and control targets The physical quantity that becomes. Comments can also be handled as variables. The comment defined in this way is associated with a desired device address corresponding to the device 5 in advance.

  The screen data includes process definition information (tag) that defines various processes performed in relation to the user screen. This processing specification information is created for each event to be executed on the base screen. Basically, the file number (screen number) of the base screen on which the display processing is to be executed and the base screen are executed. An event name for specifying the operation content to be performed and reference information including one or a plurality of data referred to for each execution event are provided as a set.

  In the programmable display device 2 according to the present embodiment, as the above-described tag, a display tag indicating the correspondence between the region (display range) on the base screen and the device address of the device corresponding to the display in the region, and the screen A touch input tag indicating the correspondence between an area (input range) and an address corresponding to a touch input to the area is defined. Furthermore, in this embodiment, each tag can be associated with at least one of a plurality of user screens.

  The ladder file is a ladder program file executed by the HMI / controller unit 21 and is created by the editor computer 1. This ladder file includes a command data part and an address data part. The command data portion includes operands (addresses) used for coding corresponding to ladder instructions corresponding to the input ladder symbols. The ladder symbol selected when creating the ladder program is saved as a ladder command in the ladder file. On the other hand, the address data part includes the address set in the ladder editor and the above-mentioned comment associated with the ladder instruction corresponding to the input ladder symbol so as to correspond to the operand of the command data part. It is out.

  The work memory 27 is composed of, for example, a DRAM and is used for work during arithmetic processing such as display control and execution of a ladder program, and is used for temporary storage of acquired data of the device 5. The work memory 27 also includes a VRAM that develops an image to be displayed on the display 22. In this VRAM, the image of the screen data read from the data memory 26 is stored as dot data in the order displayed in the horizontal direction.

  The HMI / controller unit 21 is provided as the center of control in order to realize an HMI (Hunam Machine Interface) function and a control function. The HMI / controller unit 21 is a functional block realized by executing a program.

  When the HMI / controller unit 21 displays a screen of the state of the device 5 connected to the programmable display 2 via the interface unit 4 based on screen data determined by combining processing definition information (tag) described later. And the operation when the state of the device 5 is controlled in accordance with the operation on the screen. Further, the HMI / controller unit 21 has a function of acquiring the state of the device 5 by communication via the interface unit 4 and drawing and displaying the state of each device 5 on the screen displayed on the display 22. Further, the HMI / controller unit 21 has a function of instructing control to the device in accordance with an operation on the touch panel 23.

  The programmable display 2 holds the state (state data) of the device 5 in a specific area (state memory area) of the work memory 27, for example. When acquiring the state data of the device 5, the HMI / controller unit 21 reads it by designating it with a variable preset by the user in the state memory area. Also, when giving a control instruction (state data change instruction) to the device 5, the HMI / controller unit 21 rewrites the state data specified by the above variables in the state memory area, and then transmits it to the device 5. To do.

  The device 5 connected to each input / output terminal of the interface unit 4 is not directly associated with each other, but is associated with the above variable. As a result, the HMI / controller unit 21 holds the state data as variable data (variable data), and by specifying the variable, the state data can be acquired or the state data can be changed.

  The HMI / controller unit 21 performs a central control operation of the controller function such as execution of a ladder program. Specifically, prior to executing the ladder program, the HMI / controller unit 21 reads a ladder file from the data memory 26 and develops it as a ladder program in the work memory 14 to determine a predetermined number such as several tens of ms. Ladder instructions are executed one by one by scanning in cycles.

  The program for realizing the HMI / controller unit 21 can be recorded on a recording medium configured to be separable from the programmable display 2 and may be installed in the programmable display 2 from the recording medium. The program is prepared individually for each model in order to exhibit a function corresponding to the model of the programmable display 2.

  The above recording media include tape systems such as magnetic tapes and cassette tapes, magnetic disk systems such as flexible disks and hard disks, optical disk systems such as CD-ROM, MO, MD, and DVD, IC cards (including memory cards), optical A card system such as a card is preferred. In addition, the program medium may be a medium that carries a fixed program including a semiconductor memory such as a mask ROM, EPROM, EEPROM, flash ROM, or the like.

  Further, if the programmable display device 2 is configured to be connectable to a communication network including the Internet, it may be a medium that fluidly carries the program so as to download the program from the communication network. However, when the program is downloaded from the communication network in this way, the download program may be stored in advance in the programmable display 2 or may be installed from another recording medium.

  Next, the editor computer 1 will be described.

  The editor computer 1 is constituted by a personal computer having a CPU, a memory (RAM, ROM, etc.), an external storage device (hard disk drive, MO drive, etc.), a display device and an input device (keyboard, mouse, etc.). The editor computer 1 includes a control unit 11, an interface unit (I / F in the figure) 12, a screen editor unit 13, and a data storage unit 14.

  The interface unit 12 is a communication control unit for performing communication with the programmable display 2 and is connected to the transfer cable 3.

  The control unit 11 is a functional block realized by hardware (CPU, memory, etc.) and software (operating system, etc.), and controls execution of application programs and operations of peripheral devices. The control unit 11 has a work memory 11a in order to fulfill its function. The work memory 11a is constituted by a RAM or the like, and is used for developing a screen file or a ladder file.

  Moreover, the control part 11 implement | achieves the editor part 13 by running the editor software which is an application program. The editor unit 13 is recorded on a recording medium configured to be separable from the editor computer 1, and can be installed in the editor computer 1 from this storage medium. Further, as will be described later, the editor computer 1 functions as a unit information setting device by including an editor unit 13 having a function of setting information regarding the interface unit 4.

  The above-mentioned recording medium (program medium) is a computer-readable recording medium, such as a tape system such as a magnetic tape or a cassette tape, a magnetic disk system such as a flexible disk or a hard disk, CD-ROM, MO, MD, DVD, etc. A card system such as an optical disk system, an IC card (including a memory card), or an optical card is suitable. In addition, the program medium may be a medium that carries a fixed program including a semiconductor memory such as a mask ROM, EPROM, EEPROM, flash ROM, or the like.

  Further, if the editor computer 1 is placed in an environment connectable to a communication network including the Internet, it may be a medium that fluidly carries the program so as to download the program from the communication network. However, when the program is downloaded from the communication network in this way, the download program may be stored in the editor computer 1 in advance or may be installed from another recording medium.

  The editor unit 13 includes components such as switches, lamps, numeric keys, and various displays (for example, a numerical display, a meter display, and a graph display) and various types so as to support the creation of a user screen that is a screen unique to the user. Tag setting function, drawing function, text input function, etc. As components, not only components having a single function but also components having a plurality of functions such as a composite switch, a counter, and a timer are prepared. The components are registered in a library format so that the user can easily select them, and input tags, display tags, and the like corresponding to the functions of the components are assigned in advance. The drawing function is a function for drawing a line figure such as a straight line or a curve, drawing a basic figure such as various graphs, circles, squares, and triangles, and painting with a designated color or pattern in the figure.

  The above tag is included in the screen data as processing definition information, and is created for each event to be executed on the base screen. This processing specification information is basically referenced for each execution event, the file number of the base screen on which the display control operation is to be executed, the event name that specifies the operation content to be executed on this base screen, and so on. One set of reference information including one or a plurality of data is provided.

  The editor unit 13 supports creation of a ladder program that is a sequence program (logic program) that determines a control procedure so that the device 5 operates in accordance with a desired sequence. The editor unit 13 can create a ladder program in the form of a ladder diagram by arranging ladder symbols corresponding to the device 5 and ladder symbols representing various processes such as arithmetic processing on a display screen (not shown) of the editor computer 1. It is configured.

  The editor unit 13 associates the device 5 connected to each input / output terminal of the interface unit 4 with a comment (variable) set by the user as an input / output number assignment (I / O assignment). The result of this allocation is stored in a ladder file as part of the ladder program.

  Conventionally, such allocation in the PLC differs depending on the manufacturer of the PLC, and is set with an absolute address. Therefore, it is necessary to prepare a memory table according to the manufacturer. However, the editor 13 compliant with the international standard IEC does not need the above memory table because the user can determine input / output by a variable (free variable) such as a comment. Moreover, the allocation once determined can be changed later. In this way, by using variables, it is possible to perform I / O allocation without considering attributes dependent on the PLC model.

  The editor unit 13 includes a unit setting unit 131 for performing various settings for the interface unit 4 to be used. The unit setting unit 131 includes a unit information setting unit 131a and a connection position changing unit 131b.

  Here, an example in which two interface units 4 are connected will be described.

  The unit setting unit 131 displays an I / O driver setting dialog box 101 as shown in FIG. 2A as a user interface in order to perform the above setting. The I / O driver setting dialog box 101 is provided for setting the interface unit 4 to be used and an I / O driver corresponding to the interface unit 4 to be used, and includes a unit mounting image 102, a unit information display unit 103, a unit operation, and the like. It has a button 104.

  The unit mounting image 102 is an image of the programmable display 2 with the interface unit 4 mounted on the back as viewed from above. The unit mounting image 102 includes a display portion 102 a representing the programmable display 2 and a unit portion 102 b representing the interface unit 4. Become. In the unit portion 102b, the model name of the interface unit 4 set in accordance with the interface unit 4 attached to the programmable display 2 is displayed.

  The unit information display unit 103 is provided for displaying information of the interface unit 4 that is currently set. When the unit portion of the unit mounting image 102 is clicked, the unit information setting unit 131a indicates that the unit portion has been changed in color, and the unit information display unit 103 displays the information of the selected interface unit 4 indicate. Examples of information displayed on the unit information display unit 103 include the model name of the interface unit 4, the unit type, and the input / output type (bit or word). When there are many display items in the unit information display unit 103, they may be displayed separately in a tab format.

  The unit operation button 104 includes a unit addition button 104a, a unit deletion button 104b, a unit change button 104c, and a unit replacement button 104d.

  When the unit addition button 104a is clicked, the unit information setting unit 131a displays a selectable interface unit 4 in a list box on the unit information display unit 103, although not shown, and the interface unit 4 selected by the user. Add new information about. Further, the unit information setting unit 131a adds the image of the added interface unit 4 to the unit mounting image 102 and displays it.

  When the unit deletion button 104b is clicked, the unit information setting unit 131a displays a list of already set interface units 4 on the unit information display unit 103 (not shown), and the interface unit 4 selected by the user is displayed. Delete information about. Further, the unit information setting unit 131 a deletes the deleted image of the interface unit 4 from the unit mounting image 102.

  When the unit change button 104c is clicked, the unit information setting unit 131a displays a list of already set interface units 4 (replacement sources) on the unit information display unit 103 and is selectable. The interface unit 4 (replacement destination) is displayed in a list box, and information on the replacement-source interface unit 4 and the replacement-destination interface unit 4 selected by the user is exchanged and displayed. Further, the unit information setting unit 131a newly displays the image of the replaced interface unit 4 on the unit mounting image 102.

Connecting position changing section 131b, when unit replacement button 104d is clicked, as shown in FIG. 2 (b), in the vicinity of the unit mounting image 102 displays a unit replacement operation button 105. When the unit replacement operation button 105 is clicked, the connection position changing unit 131b switches and displays the position of the unit portion in the unit mounting image 102. The connection position changing unit 131b also replaces the information on the connection position (connection order) of the interface unit 4 in accordance with the replacement display.

  When three or more interface units 4 are connected, a user interface that allows the user to select two interface units 4 to be replaced in the unit mounting image 102 may be prepared.

  Here, the transition of the data state accompanying each unit operation described above will be described.

  First, as shown in FIG. 3, the above-described port number is associated with a pointer indicating the model type of the interface unit 4, and is expanded in the work memory 11a in this state when setting unit information. A pair of the port number and the pointer is provided as connection position data of the interface unit 4.

  Further, the data structure of the setting data is represented as a memory map of FIG. 4 when two interface units 4 having respective types A and B are set, for example. Specifically, type A data and corresponding setting data are stored in the area represented by the pointer “0”, and type B data and the corresponding data are stored in the area represented by the pointer “100”. And setting data to be stored.

  As described above, the setting data of the interface unit 4 and the data of the connection position are individually developed in the work memory 11a.

  First, when the interface unit 4 of the type A has already been set, and when the interface unit 4 of the type B is further added, as shown in FIG. 5A, the pointer “100” is set at the port number 2. The correspondence between the port number and the pointer, that is, the data of the connection position is rewritten so that “

  Next, the two interface units 4 of the models A and B are already set. When the interface unit 4 of the model A is deleted, when the deletion is set, as shown in FIG. The data of the connection position is rewritten so that the pointer “100” corresponds to.

  Next, the two interface units 4 of the models A and B are already set. When the interface unit 4 of the model B is changed to the interface unit 4 of the model C, when the change is set, FIG. As shown, the connection position data is rewritten so that the port number 2 corresponds to the pointer “200” of the type C.

  Furthermore, when two interface units 4 of type A and B have already been set and the connection positions of both interface units 4 are switched, when the replacement is set, as shown in FIG. The data at the connection position is rewritten so that the pointer “100” corresponds to the port number 2 and the pointer “0” corresponds to the pointer “0”.

  While being set using the I / O driver setting dialog box 101 as described above, the unit setting unit 131 develops each setting data in the work memory 11a as described above. In this state, the setting data regarding each interface unit 4 is expanded in the work memory 11a separately from the connection position data. The unit setting unit 131 stores the setting data in the file format as a unit setting file in the data storage unit 14 together with the I / O driver. At this time, the setting data of each interface unit 4 is stored in a state in which the order of the connection positions of the interface units 4 is defined based on the connection position data.

  The unit setting file saved as described above is transferred to the programmable display 2 together with the I / O driver and stored in the data memory 26.

  As described above, by using the editor computer 1 for unit setting and confirmation, the interface unit 4 used in one I / O driver setting dialog box 101 can be set and confirmed. As a result, it is possible to eliminate troublesome operations such as opening and closing a dialog box provided for each interface unit 4 each time setting is performed, as in the related art.

  Further, by displaying the unit installation image 102 in the I / O driver setting dialog box 101, it is possible to grasp the currently set unit configuration. Therefore, the hardware configuration and the setting contents can be easily confirmed visually. In addition, when the connection position of the interface unit 4 is changed, the connection position change unit 131b updates the connection position information so that the connection position of the interface unit 4 can be changed by simply clicking the unit replacement operation button 105. To do. Therefore, unlike the conventional case, it is not necessary to perform a laborious operation of deleting the current setting according to the connection position and newly setting it again.

  Moreover, since the unit setting file stored in the programmable display 2 includes information on the connection position of the interface unit 4 as described above, the programmable display 2 can operate based on the information. . Thereby, when the position of the interface unit 4 is replaced, the programmable display 2 is transferred based on the information on the connection position by transferring a unit setting file including information on the new connection position to the programmable display 2. It can work. Therefore, unlike the setting method disclosed in Patent Document 1, the programmable display device 2 does not need to recognize the position of the unit connected by the hardware check, and after the connection position of the interface unit 4 is changed. It is possible to shorten the time required for actual operation at the time of restart.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims. That is, embodiments obtained by combining technical means appropriately modified within the scope of the claims are also included in the technical scope of the present invention.

  Since the unit information setting device of the present invention can facilitate the information of the interface unit connected to the programmable display, it can be suitably used for a control system including a programmable display capable of connecting a plurality of interfaces.

It is a block diagram which shows the editor computer which concerns on embodiment of this invention, and the programmable structure connected to it. (A) And (b) is a figure which shows the dialog box displayed for the setting of the interface unit by the editor part in the said editor computer. It is a figure which shows the structure of the connection position data of the said interface unit expand | deployed to the working memory of the said editor computer. It is a figure which shows the structure of the setting data of the said interface unit expand | deployed to the working memory of the said editor computer. (A) thru | or (d) is a figure which shows the change before and behind the operation of connection position data in the case of adding, deleting, changing, and replacing each interface unit.

Explanation of symbols

1 Editor computer (unit information setting device)
2 Programmable display 4 Interface unit 11a Work memory 13 Screen editor (screen creation program)
101 I / O driver setting dialog box (setting screen)
102 Unit installation image (installation image)
102a Display portion 102b Unit portion 104d Unit replacement button 105 Unit replacement operation button (operation button)
131 Unit setting unit 131a Unit information setting unit (mounting image display means, information display means)
131b Connection position changing unit (position information changing means)

Claims (3)

A plurality of interface units can be continuously mounted on the outside , and a plurality of ports for individually communicating with each mounted interface unit are provided, and the interface unit is identified by a port number for designating each port. A unit information setting device for setting information about the interface unit attached to the programmable display to communicate with the programmable display,
A mounting image display means for displaying an image of a state in which the set interface unit is mounted on the programmable display on a setting screen for setting information on the interface unit;
When unit portion representing said interface unit before listening image is selected, and information display means for displaying information about the interface unit corresponding to the unit portion on the setting screen,
An operation button for switching the mounting position of the interface unit with respect to the programmable display is displayed on the setting screen, and when the operation button is operated, information on the mounting position of the specified interface unit is switched. And position information changing means for changing according to
The mounting image display means, based on the information of the changed mounting position, displays the arrangement of the unit part is switched,
The mounting position information is a pair of a pointer indicating the model of the interface unit and the port number, and information relating to the interface unit is stored in a memory area represented by the pointer. Information setting device. A unit information setting program for operating the unit information setting apparatus according to claim 1 , wherein the unit information setting program causes a computer to function as each means. A computer-readable recording medium on which the unit information setting program according to claim 2 is recorded.

Images